https://communities.sas.com/t5/ODS-and-Base-Reporting/How-to-print-the-observation-no-in-to-seperate-data-set/m-p/5873#M2374 you can use _N_ see my example:<BR /> <BR /> data work.teste;<BR /> format obsno 8.;<BR /> set sashelp.class;<BR /> obsno=_N_;<BR /> run;<BR /> <BR /> <BR /> i hope this help Wed, 12 Dec 2007 11:01:29 GMT BrunoSilva 2007-12-12T11:01:29Z https://communities.sas.com/t5/ODS-and-Base-Reporting/How-to-print-the-observation-no-in-to-seperate-data-set/m-p/5872#M2373 hi ,<BR /> my data like this...<BR /> name rno marks<BR /> aaa 1 23<BR /> bbb 2 34<BR /> <BR /> but i want out put like this<BR /> obsno name rno marks<BR /> 1 aaa 1 23<BR /> 2 bbb 2 34<BR /> <BR /> <BR /> thanks<BR /> sree Wed, 12 Dec 2007 07:46:24 GMT https://communities.sas.com/t5/ODS-and-Base-Reporting/How-to-print-the-observation-no-in-to-seperate-data-set/m-p/5872#M2373 deleted_user 2007-12-12T07:46:24Z https://communities.sas.com/t5/ODS-and-Base-Reporting/How-to-print-the-observation-no-in-to-seperate-data-set/m-p/5873#M2374 you can use _N_ see my example:<BR /> <BR /> data work.teste;<BR /> format obsno 8.;<BR /> set sashelp.class;<BR /> obsno=_N_;<BR /> run;<BR /> <BR /> <BR /> i hope this help Wed, 12 Dec 2007 11:01:29 GMT https://communities.sas.com/t5/ODS-and-Base-Reporting/How-to-print-the-observation-no-in-to-seperate-data-set/m-p/5873#M2374 BrunoSilva 2007-12-12T11:01:29Z